Hmmm, interesting question, it throws me for a loop. But I think I found the wisdom in it. When I am around people that I am at odds with, great or small, I learn more about myself. Who I am and what i want to be instead.
I think the blessing is learning how to be holy to our enemys. Instead of resorting to fear and hostility, the blessing comes from learning to view them as people in need of Gods charity.
Learning how to tie our shoes or to fish for ourselves is a life long blessing that is taught to us. I think learning to be holy even to our enemies is a similar blessing and when those situations arise its our chance at being taught that.